dot child name syntax

src/grammar.pest

@@ -10,7 +10,11 @@ wildcardedDotChild = { ".*" }
 namedDotChild = ${ "." ~ childName }
 childName = @{ char+ }
 char = {
-    !("\"" | "'" | "\\") ~ ANY // char is still TBD in the draft
+    "-"
+    | ASCII_DIGIT
+    | ASCII_ALPHA
+    | "_"
+    | '\u{80}'..'\u{10FFFF}'
 }
 
 union =  { "[" ~ unionElement ~ ("," ~ unionElement)* ~ "]" }

tests/cts.json

@@ -10,6 +10,15 @@
     "document": {"a" : "A", "b" : "B"},
     "result": ["A"]
   }, {
+    "name": "dot child, ☺ name",
+    "selector": "$.☺",
+    "document": {"☺" : "A", "b" : "B"},
+    "result": ["A"]
+  }, {
+    "name": "dot child, invalid character",
+    "selector": "$.&",
+    "invalid_selector": true
+    }, {
     "name": "dot child absent",
     "selector": "$.c",
     "document": {"a" : "A", "b" : "B"},